C#为每个循环调用所有属性 [英] C# calling all properties, for each loop

问题描述

我有一个foreach循环，我想在foreach循环中调用某个类的所有属性，这样我就不必全部写出来.

I have a foreach loop and I would like to call all properties of a certain class in the foreach loops so I don't have to write it all out.

我创建的课程

public Person()
    {
        firstname = "";
        surname = "";
        haircolor = "";
        eyecolor = "";
        weight = 0;
        height = 0;
        age = 0;
    }

这是我要压缩的代码

  Console.WriteLine("Please enter the next persons firstname");//new person user input (firstname)
  addperson.firstname = Console.ReadLine();

  Console.WriteLine("Enter the persons surname");//surname
  addperson.surname = Console.ReadLine();

  Console.WriteLine("Enter " + addperson.name + "'s hair color");//hair color
  addperson.haircolor = Console.ReadLine();

  Console.WriteLine("Enter the age of " + addperson.firstname);//age
  addperson.age = Convert.ToInt32(Console.ReadLine());

  Console.WriteLine("Enter the weight of " + addperson.firstname);//weight
  addperson.weight = Convert.ToDouble(Console.ReadLine());

  Console.WriteLine("Enter the height of " + addperson.firstname);//height
  addperson.height = Convert.ToDouble(Console.ReadLine());

我已经开始了foreach循环，我想一种将所有代码压缩为循环的方法

I have started on the foreach loop, I would like a way to compact all of that code to a loop

  foreach (Person.)
            {
                Console.WriteLine("Please enter " +addperson.ToString);
                  Person.addperson = Console.ReadLine();
            }

任何帮助将不胜感激

推荐答案

您需要使用反射功能才能动态地遍历每个属性，我个人不会将其更改为使用反射功能，因为反射功能会降低性能，但这是代码供您参考:

you need to use reflection to be able to loop over each property dynamically, personally i wont change it to use reflection since reflection has performance penalties, but here is the code for your reference:

将类别"字段更改为属性:

Change Class fields to properties:

    public class Person
    {
      public string firstname {get;set;}
      public string surname {get;set;}
      public string haircolor {get;set;}
      public string eyecolor {get;set;}
      public string weight {get;set;}
      public string height {get;set;}
      public string age {get;set;}
     }

在您的主要方法中编写以下代码:

Write this code in your main method:

       Person addperson = new Person();
       PropertyInfo[] props = addperson.GetType().GetProperties();

        foreach(PropertyInfo prop in props)
        {
              Console.WriteLine("Please enter " + prop.Name.ToString());
              string input = Console.ReadLine();
              prop.SetValue(addperson, input, null);
        }

这行代码:

 PropertyInfo[] props = addperson.GetType().GetProperties();

返回Person类型(类)的所有公共属性，然后每个PropertyInfo对象发现该属性的属性并提供对其元数据的访问.

Returns all the public properties of the Person type (class), then each PropertyInfo object discovers the attributes of the property and provides access to its metadata.

这篇关于C#为每个循环调用所有属性的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！